2221222200091 has 2 divisors, whose sum is σ = 2221222200092. Its totient is φ = 2221222200090.

The previous prime is 2221222199971. The next prime is 2221222200133. The reversal of 2221222200091 is 1900022221222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221222200091 - 2¹⁵ = 2221222167323 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221232200091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110611100045 + 1110611100046.

It is an arithmetic number, because the mean of its divisors is an integer number (1110611100046).

Almost surely, 2^{2221222200091} is an apocalyptic number.

2221222200091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221222200091 is an equidigital number, since it uses as much as digits as its factorization.

2221222200091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 2221222200091 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred thousand, ninety-one".